Double-edge Nut Files

4.5
  • 73 Reviews
  • Write a review

The most durable and efficient nut-slotting files available. Specially designed for nut slotting, each file cuts two different width slots.

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Double-edge Nut Files 0.012" / 0.020"

0.012" / 0.020"

Item # 4541
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$27.34

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Double-edge Nut Files 0.026" / 0.032"

0.026" / 0.032"

Item # 4542
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$27.34

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Double-edge Nut Files 0.036" / 0.042"

0.036" / 0.042"

Item # 4543
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$27.34

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Double-edge Nut Files 0.050" / 0.060"

0.050" / 0.060"

Item # 4544
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$27.34

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Double-edge Nut Files 0.075" / 0.090"

0.075" / 0.090"

Item # 4545
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$27.34

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Double-edge Nut Files 0.105" / 0.120"

0.105" / 0.120"

Item # 4546
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$27.34

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Details

The most durable and efficient nut-slotting files available. Specially designed for nut slotting, each file cuts two different width slots.

Each 9/16" x 7-5/8" (14.29mm x 193.67mm) steel file cuts on the edges only, and tapers from the center to a different thickness on each cutting edge. The set of six files does the work of twelve!

Rubber-coated handles give firm, comfortable control for the job. The complete set includes edge widths for filing round-bottom nut slots on most stringed instruments, including basses. Each file's cutting edge is approximately 3-7/8" (98.43mm) long.

What files do I need?
Choose nut slotting files that are the same size or no more that a few thousands larger than your individual string gauges. A smaller file can also be rocked side-to-side to widen a slot to the desired size. For example, you can cut a .043" slot with a .042" file by moving it around a bit.

The most popular Double-edge Nut Files are included in the Essential Nut Making Tool Kit, which has all the basic tools you'll need for shaping, string-spacing, slotting and fitting string nuts like a pro.

Tip: Customize your files
We recommend that you mark on each side of your files so while working you can quickly tell the different gauge of cut.

Here's how: make a cut on a scrap piece of bone or wood with both sides of the nut file, then measure the width of each cut with feeler gauges to determine which side is which. Guitar strings of known gauges will also work as measuring tools in a pinch.

Once you have determined the proper edge, mark the file accordingly with a permanent marker.


Product Instructions

Making a Nut, Step-by-Step

Dan Erlewine, of Stewart-MacDonald's R&D Team, walks you through making and installing a new nut.

Ratings & Reviews

Double-edge Nut Files

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  • GOOD PRODUCT
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4.5
  • Based on 73 Reviews
Displaying 1 of 8 1 2 3 4 5 6 7 8
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3.0

Dull quickly....

By
(Customer's Reviews)


To be fair, I have been very satisfied with all the products I have purchased from Stew Mac. These files however are the one exception. Given their cost, they dull way too quickly. They are fine for softer plastic and graphite nuts but for harder bone, brass, etc., you are lucky if you get a half dozen good jobs out of them. 'Recommend for the weekend luthier but not for the pro. Stew Mac, you can do better.

5.0

No substitute for these

By
(Customer's Reviews)


I have tried all the poor-man's work-arounds; welding tip cleaners, needle files, you name it. Finally sprung for a small assortment of these, and holy cow, I can't believe how much faster, easier and more accurately you can slot a nut with them. Nice quality, cuts a metal saddle with ease too.

5.0

Excellent!

By
(Customer's Reviews)


Fabulous quality. I hand marked with a fine tip Sharpie as instructed and uploaded photo to help future buyers of this product.

5.0

Must have!

By
(Customer's Reviews)


I have 4 of them and love em' all! Just buy it!

5.0

Good quality

By
(Customer's Reviews)


I work on both basses and guitars and find the use for all of the files in the set from the smallest to the biggest gauge. They cut well and leave well shaped slots - no string binding, no side-to-side wandering. Couldn't be happier!

4.0

Great files and great customer service

By
(Customer's Reviews)


I've had a set of the double-edged nut files for 13 years and one chipped so I figured it was time to order a whole new set. I'd definitely gotten my money's worth from the first set. The new ones cut beautifully BUT the .012/.020 file had a defect in the .020 side. It left a ridge in the nut slot causing the string to click when it was bent. I phoned Stew Mac and they sent a new one right away, no hassle. BUT, the new one had the same defect. Stew Mac sent me the single nut files that matched the gauges, again, no hassles. Thanks for the real customer service.

4.0

Good but...

By
(Customer's Reviews)


I am now on my second set of these files but have found that both sets had at least one handle fitted upside-down so I was cutting incorrect widths. Pays to check.

4.0

Great files and sharp

By
(Customer's Reviews)


These are a great set of files, if there's any drawback is the angle on the files goes wide very fast. This leaves you with a nut with wider slots at the top. Filing down the top of the nut solves the problem but for sure the strings will not get stuck.

3.0

mostly great

By
(Customer's Reviews)


The files were pretty good. The .105/.120 file was not as straight and true as all the others. On all the slots, I ended up having to use a size up to .015 smaller than the target gauge for the final pass to eliminate the buzzing at the nut. Didn't cause the string to bind or anything doing that. Good thing I left a little extra height just in case & had a spare nut to try again. Wasted one in the process.

5.0

Great nut files

By
(Customer's Reviews)


I bought these to replace a 30 year old set and to have bass guitar nut widths. They cut so quick I ruined the first nut! Excellent product but I would like some indication of which cutting side corresponds to which size.

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